1210202021020 has 48 divisors (see below), whose sum is σ = 2552492386080. Its totient is φ = 481977026816.

The previous prime is 1210202020997. The next prime is 1210202021051. The reversal of 1210202021020 is 201202020121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4241994 + ... + 4518286.

It is an arithmetic number, because the mean of its divisors is an integer number (53176924710).

Almost surely, 2^{1210202021020} is an apocalyptic number.

1210202021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210202021020 is an abundant number, since it is smaller than the sum of its proper divisors (1342290365060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210202021020 is a wasteful number, since it uses less digits than its factorization.

1210202021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277254 (or 277252 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1210202021020 its reverse (201202020121), we get a palindrome (1411404041141).

The spelling of 1210202021020 in words is "one trillion, two hundred ten billion, two hundred two million, twenty-one thousand, twenty".